CVE-2023-53540: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: reject auth/assoc to AP with our address If the AP uses our own address as its MLD address or BSSID, then clearly something's wrong. Reject such connections so we don't try and fail later.

Affected products

• Linux Linux Kernel: from 2.6.32, before 6.1.55 (fixed in 6.1.55); from 6.2, before 6.5.5 (fixed in 6.5.5)

Published 2025-10-04. Last modified 2026-08-04.